<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <link rel="shortcut icon" href="{{url_for('static',filename='images/favicon.ico')}}" type="image/x-icon"/>
    <title>{%block title %}{% endblock %}-问题系统</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
    <!--引入css文件-->
    <link rel="stylesheet" href="{{url_for('static',filename='css/base.css')}}">
    <script>https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js</script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
    {%block head %}{% endblock %}
</head>
<body>
  <nav class="navbar navbar-default">;
  <div class="container-fluid">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="{{url_for('index')}}">
        <img class="logo" src="{{url_for('static',filename='images/logo.png')}}" alt="">
      </a>
    </div>
    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">
        <li><a href="{{url_for('index')}}">首页</a></li>
        <li><a href="{{url_for('question')}}">发布问答</a></li>
      </ul>
      <form class="navbar-form navbar-left">
        <div class="form-group">
          <input type="text" class="form-control" placeholder="搜索">
        </div>
        <button type="submit" class="btn btn-default">查找</button>
      </form>
      <ul class="nav navbar-nav navbar-right">
          <!--判断用户是否有登陆，有才把用户名赋值-->
                    {% if user %}
                        {#<li><a href="{{ url_for('center',users_id=user.id) }}">{{ user.username }}</a></li>#}
                         <li><a href="{{ url_for('center',users_id=user.id) }}">
                             <img class="img" src="/static/images/{{ user.img_url }}" alt="">
                         </a></li>
                        <li><a href="{{ url_for('logout') }}">注销</a></li>
                    {% else %}
                        <li><a href="{{ url_for('login') }}">登录</a></li>
                        <li><a href="{{ url_for('regist') }}">注册</a></li>
                    {% endif %}
      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>
    <div class="main">
    {%block main %}{% endblock %}
    </div>
</body>
</html>